1 /* $NetBSD: com_obio.c,v 1.22 2008/04/28 20:23:35 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1991 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)com.c 7.5 (Berkeley) 5/16/91 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.22 2008/04/28 20:23:35 martin Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/ioctl.h> 69 #include <sys/select.h> 70 #include <sys/tty.h> 71 #include <sys/proc.h> 72 #include <sys/user.h> 73 #include <sys/conf.h> 74 #include <sys/file.h> 75 #include <sys/uio.h> 76 #include <sys/kernel.h> 77 #include <sys/syslog.h> 78 #include <sys/types.h> 79 #include <sys/device.h> 80 #include <sys/termios.h> 81 82 #include <machine/bus.h> 83 #include <machine/autoconf.h> 84 #include <machine/intr.h> 85 86 #include <dev/ic/comreg.h> 87 #include <dev/ic/comvar.h> 88 89 #include <sparc/sparc/auxreg.h> 90 91 struct com_obio_softc { 92 struct com_softc osc_com; /* real "com" softc */ 93 94 int osc_tadpole; /* is this on a tadpole */ 95 /* OBIO-specific goo. */ 96 struct evcnt osc_intrcnt; /* interrupt counting */ 97 }; 98 99 static int com_obio_match(device_t, cfdata_t , void *); 100 static void com_obio_attach(device_t, device_t, void *); 101 102 CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc), 103 com_obio_match, com_obio_attach, NULL, NULL); 104 105 static int 106 com_obio_match(device_t parent, cfdata_t cf, void *aux) 107 { 108 union obio_attach_args *uoba = aux; 109 struct sbus_attach_args *sa = &uoba->uoba_sbus; 110 int tadpole = 0; 111 int need_probe = 0; 112 int rv = 0; 113 uint8_t auxregval = 0; 114 115 if (uoba->uoba_isobio4 != 0) { 116 return (0); 117 } 118 119 /* 120 * Tadpole 3GX/3GS uses "modem" for a 16450 port 121 * (We need to enable it before probing) 122 */ 123 if (strcmp("modem", sa->sa_name) == 0) { 124 auxregval = *AUXIO4M_REG; 125 *AUXIO4M_REG = auxregval | (AUXIO4M_LED|AUXIO4M_LTE); 126 DELAY(100); 127 tadpole = 1; 128 need_probe = 1; 129 } 130 131 /* 132 * Sun JavaStation 1 uses "su" for a 16550 port 133 */ 134 if (strcmp("su", sa->sa_name) == 0) { 135 need_probe = 1; 136 } 137 138 if (need_probe) { 139 bus_space_handle_t ioh; 140 141 if (sbus_bus_map(sa->sa_bustag, 142 sa->sa_slot, sa->sa_offset, sa->sa_size, 143 BUS_SPACE_MAP_LINEAR, &ioh) == 0) { 144 rv = comprobe1(sa->sa_bustag, ioh); 145 #if 0 146 printf("modem: probe: lcr=0x%02x iir=0x%02x\n", 147 bus_space_read_1(sa->sa_bustag, ioh, 3), 148 bus_space_read_1(sa->sa_bustag, ioh, 2)); 149 #endif 150 bus_space_unmap(sa->sa_bustag, ioh, sa->sa_size); 151 } 152 } 153 154 /* Disable the com port if tadpole */ 155 if (tadpole) 156 *AUXIO4M_REG = auxregval; 157 158 return (rv); 159 } 160 161 static void 162 com_obio_attach(device_t parent, device_t self, void *aux) 163 { 164 struct com_obio_softc *osc = device_private(self); 165 struct com_softc *sc = &osc->osc_com; 166 union obio_attach_args *uoba = aux; 167 struct sbus_attach_args *sa = &uoba->uoba_sbus; 168 bus_space_handle_t ioh; 169 bus_space_tag_t iot; 170 bus_addr_t iobase; 171 172 sc->sc_dev = self; 173 174 if (strcmp("modem", sa->sa_name) == 0) { 175 osc->osc_tadpole = 1; 176 } 177 178 /* 179 * We're living on an obio that looks like an sbus slot. 180 */ 181 iot = sa->sa_bustag; 182 iobase = sa->sa_offset; 183 sc->sc_frequency = COM_FREQ; 184 185 /* 186 * XXX: It would be nice to be able to split console input and 187 * output to different devices. For now switch to serial 188 * console if PROM stdin is on serial (so that we can use DDB). 189 */ 190 if (prom_instance_to_package(prom_stdin()) == sa->sa_node) 191 comcnattach(iot, iobase, B9600, sc->sc_frequency, 192 COM_TYPE_NORMAL, (CLOCAL | CREAD | CS8)); 193 194 if (!com_is_console(iot, iobase, &ioh) && 195 sbus_bus_map(iot, sa->sa_slot, iobase, sa->sa_size, 196 BUS_SPACE_MAP_LINEAR, &ioh) != 0) { 197 aprint_error(": can't map registers\n"); 198 return; 199 } 200 201 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 202 203 if (osc->osc_tadpole) { 204 *AUXIO4M_REG |= (AUXIO4M_LED|AUXIO4M_LTE); 205 do { 206 DELAY(100); 207 } while (!com_probe_subr(&sc->sc_regs)); 208 #if 0 209 printf("modem: attach: lcr=0x%02x iir=0x%02x\n", 210 bus_space_read_1(sc->sc_regs.iot, sc->sc_regs.ioh, 3), 211 bus_space_read_1(sc->sc_regs.iot, sc->sc_regs.ioh, 2)); 212 #endif 213 } 214 215 com_attach_subr(sc); 216 217 if (sa->sa_nintr != 0) { 218 (void)bus_intr_establish(sc->sc_regs.cr_iot, sa->sa_pri, 219 IPL_SERIAL, comintr, sc); 220 evcnt_attach_dynamic(&osc->osc_intrcnt, EVCNT_TYPE_INTR, NULL, 221 device_xname(self), "intr"); 222 } 223 224 if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) { 225 aprint_error_dev(self, "could not establish shutdown hook"); 226 } 227 } 228